How to use varargs as the parameter of Constructor.getConstructor( ) in java

constructor, java, reflection, variadic-functions

Solution

`String...` is just `String[]` so you can use

Constructor<?> con = klass.getConstructor(String[].class);

Note that you need to invoke the constructor like

Object o = con.newInstance((Object) new String[] {"first", "second", "more"});

with the cast to `(Object)` for a varargs invocation.

Problem

I have a java class like below which I want to create an instance of this class dynamically by using class name. ``` class Demo { public Demo(String... s) { //some initialization here. } } ``` And I want to create an object using following code ``` Class<?> klass = Class.forName("Demo"); Constructor<?> con = klass.getConstructor("**what should be here**"); Object obj = con.newInstance(param1, param2, ...); ```

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